In a word, yes, that is what I am saying - But you would do well to understand who it was that must cast the first stones. Research 'kosher witness' as a beginning.
Torah cannot be divided. It cannot be added to nor taken from. That is where I must disagree with cherry-pickers who suggest we are only obligated to the moral law (and not even all of that). No one has authority to change Torah at all.
Ah yes .. Someone who admits they believe in stoning. Thats what muslims believe also. Let he who is without sin cast the first stone.